Construction costs are currently skyrocketing

Everyone can already start with climate protection and immediately switch to 100% green electricity.
Ah yes, here comes the mindset again: climate protection yes, but please not at the expense of my wallet ;)

You can already install gas systems today that are 20% hydrogen ready. The systems are forward compatible --> if the supplier increases the H2 admixture, you can easily convert your system. Until it is supplied with 100% H2, which is somehow the goal.

Everyone can start with climate protection and switch immediately to 100% green electricity. Oh yes, here comes the mindset again: Climate protection yes, but please not at the expense of my wallet ;)

So please, nobody is that ignorant anymore today! The current 'argument' goes: "My (or our) small consumption doesn’t amount to anything anyway. The Chinese have to act first."

Of course it is! Why do you think almost every household switches electricity providers once a year? Because they care so much about 100% green electricity? This is about the cheapest price and nothing else.

It’s not much better than oil and gas in terms of the climate balance either. By the time it regrows, climate change will no longer be an issue. Either way. That means sooner or later there will also be a CO2 price tag on it. Then you have much bigger emissions problems, still need a chimney and a sweeper as well as wood from overexploitation (no, the waste from somewhere hasn’t been enough for 20 years). And if I look around here, the pellet users will soon face quite strong price increases because a lot of uninformed people in their mid-fifties are currently switching to pellets. Oh, and of course the heating system is insanely expensive or constantly broken. So no. I don’t consider it an alternative.

With all due respect, you sound just like the uninformed person in their mid-fifties right now ;) The heating system is subsidized and if it keeps breaking, you have a heating engineer who doesn’t know what he’s doing.

And the thing about pellets from overexploitation is like many things: of course, you can always take the worst possible variant as the standard. But that doesn’t make it universally true by any means. My pellets are currently cheaper than last year because, due to the high demand for construction timber, so much residual wood is produced. That definitely won’t always be the case. But compared to oil & gas, I currently see quite a few advantages!

And please don’t get me wrong: air heat pumps, geothermal, etc. are very good solutions for me (without knowing all the details) in new buildings and many renovations. I just think it’s wrong to equate pellets with gas & oil.

And here they are again – the old building, monument protection, etc. objections. Until these are clarified, we could devote ourselves to what is easily and quickly doable. There are really enough low-hanging fruits. For example, in this (new)CONSTRUCTION forum, people are still rambling about gas as a great option. Deregulate photovoltaics and put it on every public building, tenant electricity, etc. etc.

After we refreshed our school knowledge about exponential growth during the pandemic, maybe now it’s time for the Pareto principle?

But when 80% of the buildings are monument-protected ;) or rather 1.3 - 7 percent

But even there: There are enough low-hanging fruits -> KFW monument + tax advantage

I don't understand why one doesn't simply define a uniform data exchange format with which the relevant operational data of the heating system is recorded and optimized using AI. Some portal where I input my desired operating states and which informs me what I have to set and how.

that would be the idyll.

anyway:

exactly for this reason, such proprietary systems
(which are only compatible with themselves) are marketed. The aim is to prevent interoperability,
so that customers do not switch to - possibly better - competing products.
In doing so, it is simply overlooked that they also cannot poach new customers in the opposite direction to themselves
because of incompatibility.
So it is a zero-sum game.
Critics are then defamed because preventing proprietary systems is known
as "overregulation" (= bad).
Especially the Apple company has repeatedly distinguished itself negatively here.

Fortunately, at least the EU Commission finally pulled itself together by mandating the new USB connector to be standardized for device connections.